come up vs fetch

come up is not a noun while fetch is a noun.

Word	Noun	Adjective	Verb	Adverb
come up	No	No	Yes	No
fetch	Yes	No	Yes	No

come up (noun)	fetch (noun)
	the action of fetching

come up (verb)	fetch (verb)
result or issue	go or come after and bring or take back
start running, functioning, or operating	remove
gather or bring together	be sold for a certain price
gather (money or other resources) together over time
bring forth, usually something desirable
come up, of celestial bodies
come to the surface
move toward, travel toward something or somebody or approach something or somebody
move upward
get something or somebody for a specific purpose
originate or come into being
be mentioned